<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Itowns - Orthographic camera</title>

        <link rel="stylesheet" type="text/css" href="css/example.css">
        <link rel="stylesheet" type="text/css" href="css/LoadingScreen.css">
        <link rel="stylesheet" type="text/css" href="css/widgets.css">

        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <script src="https://cdnjs.cloudflare.com/ajax/libs/dat-gui/0.7.6/dat.gui.min.js"></script>
    </head>
    <body>
        <div id="description">
            Key bindings
            <ul>
                <li>Left-Click : camera translation (drag)</li>
                <li>Spacebar / Wheel-Click : smart travel</li>
                <li>Mouse Wheel : zoom in/out</li>
                <li>Y : move camera to start position</li>
            </ul>
        </div>
        <div id="viewerDiv"></div>

        <script src="../dist/itowns.js"></script>
        <script src="../dist/debug.js"></script>
        <script src="../dist/itowns_widgets.js"></script>
        <script src="js/GUI/LoadingScreen.js"></script>
        <script src="js/GUI/GuiTools.js"></script>
        <script type="text/javascript">
        /* global itowns, setupLoadingScreen, GuiTools, debug */

            itowns.proj4.defs(
                'EPSG:3946',
                '+proj=lcc +lat_1=45.25 +lat_2=46.75 +lat_0=46 +lon_0=3 +x_0=1700000 +y_0=5200000 +ellps=GRS80 ' +
                '+towgs84=0,0,0,0,0,0,0 +units=m +no_defs'
            );

            // define geographic extent : CRS, min/max X, min/max Y
            const extent = new itowns.Extent(
                'EPSG:3946',
                1837816.94334, 1847692.32501,
                5170036.45870, 5178412.82698,
            );

            // `viewerDiv` will contain iTowns' rendering area (`<canvas>`)
            const viewerDiv = document.getElementById('viewerDiv');

            // instantiate PlanarView with an orthographic camera.
            // The extent passed in `placement` is the area that will be displayed by camera.
            const view = new itowns.PlanarView(viewerDiv, extent, {
                camera: { type: itowns.CAMERA_TYPE.ORTHOGRAPHIC },
                placement: new itowns.Extent('EPSG:3946', 1838000, 1842000, 5172000, 5174000),
                controls: {
                    // limit the zoom to a resolution interval
                    maxResolution: 0.01,  // a pixel shall not represent a metric size smaller than 1 cm
                    minResolution: 100, // a pixel shall not represent a metric size larger than 100m
                }
            });
            setupLoadingScreen(viewerDiv, view);

            // add a WMS imagery source
            const wmsImagerySource = new itowns.WMSSource({
                extent: extent,
                name: 'ortho_latest',
                url: 'https://imagerie.data.grandlyon.com/wms/grandlyon',
                version: '1.3.0',
                crs: 'EPSG:3946',
                format: 'image/jpeg',
            });
            // add a WMS imagery layer
            const wmsImageryLayer = new itowns.ColorLayer('wms_imagery', {
                source: wmsImagerySource,
            });
            view.addLayer(wmsImageryLayer);

            // Add a scale :
            const scale = new itowns_widgets.Scale(view, {
                position: 'bottom-right',
                translate: { x: -70 },
            });

            // request redraw
            view.notifyChange();

            // add `Controls` menu
            if (view.isDebugMode) {
                const menu = new GuiTools('menuDiv', view);
                debug.createTileDebugUI(menu.gui, view);
            }
        </script>
    </body>
</html>
